package com.yuyu.qingmangmall.cart.vo;

import java.math.BigDecimal;
import java.util.List;

/**
 * 购物车
 * 需要计算的属性，必须重写它的get方法，保证每次获取属性都会进行计算
 */
public class Cart {

    private List<CartItem> items; // 购物项

    private Integer countNum; // 商品数量

    private Integer countType; // 商品类型数量

    private BigDecimal totalAmount; // 商品总价

    private BigDecimal reduce = new BigDecimal("0.00"); // 减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if (this.items!=null && this.items.size()>0){
            for (CartItem item : this.items) {
                count+= item.getCount();
            }
        }
        return count;
    }

    public Integer getCountType() {
        int count = 0;
        if (this.items!=null && this.items.size()>0){
            for (CartItem item : this.items) {
                count+= 1;
            }
        }
        return count;
    }

    public BigDecimal getTotalAmount() {
        // 总价-优惠
        BigDecimal amount = new BigDecimal("0");
        // 计算购物项总价
        if (this.items!=null && this.items.size()>0){
            for (CartItem item : this.items) {
                amount= amount.add(item.getTotalPrice());
            }
            // 减去优惠总价
            amount=amount.subtract(getReduce());
        }
        return amount;
    }

    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
